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1kg/2kg/3kg High Purity Graphite Crucible, Melting Gold, Silver, Copper, Furnace Casting Mould Melt Jewelry Tools, Find Details and Price about Graphite Crucible Graphite from 1kg/2kg/3kg High Purity Graphite Crucible, Melting Gold, Silver, Copper, Furnace Casting Mould Melt Jewelry Tools - Zibo Ou Zheng Carbon Co., Ltd.